﻿// -------------------------------------------------------------------------------------------------------
// LICENSE INFORMATION
//
// - This software is licensed under the MIT shared source license.
// - The "official" source code for this project is maintained at http://oncfext.codeplex.com
//
// Copyright (c) 2010 OpenNETCF Consulting
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
// associated documentation files (the "Software"), to deal in the Software without restriction, 
// including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial 
// portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT 
// NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
// -------------------------------------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;

namespace OpenNETCF
{
    public class PropertyComparer<T> : IEqualityComparer<T>
    {
        public bool Equals(T x, T y)
        {
            return Equals(x, y, false);
        }

        public bool Equals(object x, object y, bool compareNonPublicProperties)
        {
            var type = x.GetType();

            if (!type.Equals(y.GetType())) return false;

            var flags = BindingFlags.Instance | BindingFlags.Public;
            if(compareNonPublicProperties)
            {
                flags |= BindingFlags.NonPublic;
            }
            var props = type.GetProperties(flags);
            foreach (var prop in props)
            {
                if (!prop.CanRead) continue;

                var a = prop.GetValue(x, null);
                var b = prop.GetValue(y, null);

                if (!a.Equals(b)) return false;
            }

            return true;
        }

        public int GetHashCode(T obj)
        {
            return obj.GetHashCode();
        }
    }
}
